CN104136738A - Turbocharger turbine rotor and manufacturing method thereof - Google Patents
Turbocharger turbine rotor and manufacturing method thereof Download PDFInfo
- Publication number
- CN104136738A CN104136738A CN201380011158.2A CN201380011158A CN104136738A CN 104136738 A CN104136738 A CN 104136738A CN 201380011158 A CN201380011158 A CN 201380011158A CN 104136738 A CN104136738 A CN 104136738A
- Authority
- CN
- China
- Prior art keywords
- turbine wheel
- back side
- turbine
- solder
- external diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0018—Brazing of turbine parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
- B23K35/002—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of light metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
- B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/026—Shaft to shaft connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F3/15—Hot isostatic pressing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
- F05D2230/237—Brazing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/17—Alloys
- F05D2300/171—Steel alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/17—Alloys
- F05D2300/174—Titanium alloys, e.g. TiAl
Abstract
The purpose of this turbine rotor, which joins a TiAl turbine wheel and a carbon steel shaft by a Ni brazing material, is to keep the turbocharger compact and to keep the brazing position away from the back surface of the turbine wheel towards the optimal position range to prevent reduction in strength of the brazed portion due to exhaust gas temperature. This turbocharger turbine rotor, which joins a TiAl turbine wheel and a carbon steel shaft by a Ni brazing material, is characterized by setting the distance from the back surface of the turbine wheel to the brazed portion such that the turbine wheel outer diameter ratio, calculated by "the distance to the brazed portion from the back surface of the turbine wheel" / "the outer diameter of the turbine wheel," is within the range 7-10%.
Description
Technical field
The present invention relates to the turbine rotor of pressurized machine, especially relate to and utilize Ni solder that turbine wheel processed TiAl and steel are coupling and close turbine rotor and the manufacture method thereof of the pressurized machine forming.
Background technique
Automobile-use turbosupercharger is advancing miniaturization in order to improve fuelling rate, in addition, is advancing the high temperature of delivery temperature in order to improve performance.
For the requirement of this miniaturization and performance raising, propose a kind ofly by Ni soldering, being coupling of the turbine wheel processed TiAl of excellent heat resistance and steel to be closed to the turbine rotor forming, for example, known have patent documentation 1 (JP 2000-202683 communique), patent documentation 2 (Unexamined Patent 10-193087 communique), a patent documentation 3 (Unexamined Patent 10-118764 communique) etc.
In this patent documentation 1, disclose the structure being engaged by medium material by turbine wheel that between TiAl metalloid, compound base alloy forms and the beam warp that formed by carbon steel, and disclose: in the chimeric mode of concavity joint of convex joint and the medium material of turbine wheel, turbine wheel and medium material are engaged, and, insert betwixt the structure that is bonded to solder.
In patent documentation 2, also disclose to inserting solder (silver soldering agent, nickel solder flux, cubond) between the protuberance of TiAl turbine wheel processed and the recess of axle, make these recesses and protuberance structure chimeric and that engage by turbine wheel processed TiAl with by the rotor shaft that structure is used or martensite based heat-resistant steel forms.Equally, in patent documentation 3, also disclose the structure that utilizes solder to engage by turbine wheel processed TiAl with by the rotor shaft that structure is used or martensite based heat-resistant steel forms.
Patent documentation
Patent documentation 1:(Japan) JP 2000-202683 communique
Patent documentation 2:(Japan) Unexamined Patent 10-193087 communique
Patent documentation 3:(Japan) Unexamined Patent 10-118764 communique
Summary of the invention
Invent problem to be solved
As aforementioned, be accompanied by the high temperature of delivery temperature, for example, in the petrol engine of passenger car, sometimes delivery temperature reaches and approaches 1000 DEG C, in the time that TiAl turbine wheel machine rotor processed is exposed in the exhaust of this high-temperature, as shown in Figure 6, at the turbine wheel of TiAl system
solder flux is mutual, or Ni solder flux
the axle of carbon element steel is mutual, diffusion phenomena development.
These diffusion phenomena refer to that the composition in order to make storeroom distributes gently, and the Ti composition of turbine wheel, Al composition are to solder side shifting, and in addition, the Ni composition of Ni solder flux is to turbine wheel side or axle side shifting.Also be called the C composition of axle side and the N composition phenomenon to solder side shifting.
Due to the movement of C composition and the N composition of axle side, at the boundary part of Ni solder flux and carbon element steel axle, generate TiC (titanium carbide), such carbide, nitride or the carbonitride of TiN (titanium nitride) in conjunction with the Ti moving from turbine wheel.And, in axle side, producing cavity (hole) because of the mobile part of losing C composition and N composition.
The carbide that produces due to this boundary part at Ni solder flux and carbon element steel axle, nitride or carbonitride cavity (hole), soldering strength significantly reduces, and according to circumstances difference likely fractures.Therefore, because diffusion phenomena are more remarkable when high temperature, so for the exhaust of high temperature, the problem that produces the strength decreased of soldering portion becomes serious problems, wishes the countermeasure of solution.
But, although in patent documentation 1～3, disclose and utilize solder by turbine wheel processed TiAl and the carbon element steel technology of closing that is coupling, but unexposedly so far prevent carbide, nitride or the carbonitride of Ti and the generation in cavity (hole) that produce at the boundary part of solder and carbon element steel axle, prevent the countermeasure that the bond strength of soldering portion reduces.
On the other hand, in automobile-use turbosupercharger, from the aspect that requires to vehicle-mounted property, miniaturization becomes important technology essential factor.In order to make soldering position away from turbine wheel, prevent from being delivered to the heat affecting that the transmission thermal conductance of soldering portion causes and the leakage exhaust spilling from the inlet side of turbine wheel and flowing to from turbine wheel the strength decreased of the soldering portion that heat affecting that soldering portion produces causes, need to lengthen the axial length of turbine rotor, and make turbine wheel be formed as major diameter, cause the maximization of turbosupercharger., what kind of countermeasure the strength decreased that the heat affecting of soldering portion causes and small-sizedly turn to contrary relation, take become large problem to these problems.
So, in view of the problem of above-mentioned prior art, the object of the invention is to, provide a kind of Ni of utilization solder that turbine wheel processed TiAl and carbon element steel are coupling and close the turbine rotor forming, making soldering position is the position away from the proper range at the back side of turbine wheel, prevent the strength decreased of the soldering part that delivery temperature causes, and, the miniaturization that keeps turbosupercharger.
For solving the technological scheme of problem
For solving above-mentioned problem, the invention provides a kind of turbine rotor of pressurized machine, it utilizes Ni solder that turbine wheel processed TiAl and carbon element steel are coupling and are closed, it is characterized in that, set the distance from the back side of described turbine wheel to soldering portion, so that enter in 7～10% scopes by the external diameter ratio of " from the back side of turbine wheel to the distance of soldering portion "/turbine wheel that " external diameter of turbine wheel " calculates.
According to foregoing invention, by setting the distance from the back side of described turbine wheel to soldering portion, so that enter in 7～10% scopes by the external diameter ratio of " from the back side of turbine wheel to the distance of soldering portion "/turbine wheel that " external diameter of turbine wheel " calculates, do not carry out the change of the increase of rotor axial length and the position of bearings of rotor shaft, the miniaturization of pressurized machine can be maintained, the strength decreased of the soldering part that delivery temperature causes can be prevented simultaneously.
; the strength decreased of the soldering portion be exposed to for a long time in the exhaust of high temperature in the case of having carried out turbine wheel is tested; result as shown in Figure 4, significantly reduces when under approximately more than 60% state of temperature of the fusing point that the bond strength of known soldering portion is solder in the temperature of its soldering portion, long-time (800 hours) expose.(use the test film rotor shaft of turbine wheel processed TiAl and carbon steel being engaged by Ni solder to test.)
In addition, in Fig. 3, adopting temperature is the longitudinal axis with respect to the ratio of the fusing point of solder, and adopting the axial distance of axle is transverse axis with respect to the ratio of the external diameter of turbine wheel, represents the chart attirbutes of the temperature ratio of the axial position of axle.Can find out from the relation of this Fig. 3, the distance temperature far away that turbine wheel is left in the position of soldering portion more reduces, and therefore, has prevented the reduction of bond strength, but like this rotor shaft is elongated, therefore has the problem of the maximization that causes turbosupercharger.
Therefore, the present invention is using approximately 60% temperature of the fusing point of the significant solder of strength decreased as border, near before exceeding this temperature,,, by being the position of 50%～60% temperature range of fusing point of described Ni solder in the maximum temperature of soldering portion position by the set positions of soldering portion, needn't increase rotor axial length, do not change the position of bearing, can maintain the miniaturization of pressurized machine, and, can prevent the strength decreased of the soldering part that delivery temperature causes.
And, based on above opinion, use the relation property of Fig. 3, ask for while ratio with the external diameter of 50%～60% corresponding the passing through of temperature range of the fusing point of Ni solder " from the back side of turbine wheel to the distance of soldering the portion "/turbine wheel that " external diameter of turbine wheel " calculates, by this turbine wheel ratio is set in 7～10% scopes, as the aforementioned miniaturization that can maintain pressurized machine, and can prevent the strength decreased of the soldering portion that delivery temperature causes.
In addition, as be about to exceed Ni solder fusing point 60% before the external diameter ratio of the corresponding turbine wheel of 55%～60% temperature range, be set as roughly 8% and be also best suited for.
The temperature of turbine wheel inlet side is roughly fixed temperature because of delivery temperature, heat affecting to the transmission heat of center axis is also if the external diameter of turbine wheel is large, the transmission heat that correspondingly arrives soldering portion also reduces, therefore, the external diameter of turbine wheel is being important key element aspect the bond strength of evaluation soldering portion.
Therefore, the present invention does not only calculate the distance from the back side of turbine wheel to soldering portion, and calculating is the external diameter ratio of turbine wheel with the ratio of the external diameter of turbine wheel, by setting engagement positio with this ratio, can improve the reliability of the engagement positio setting.
In addition, in the present invention, preferably in the back side of described turbine wheel, and between this back side, there is gap and be equipped with rear board along this back side, flowing to the joining portion of described Ni solder with the exhaust that prevents from going out to back side side leakage from the inlet side of described turbine wheel.
Like this, it is thermal baffle that rear board is set, and Leakage prevention exhaust stream direct effect is to the joining portion of soldering, therefore, and the strength decreased of the soldering portion can Leakage prevention exhaust stream causing.
In addition, flow to joining portion owing to having suppressed leakage exhaust stream, therefore having improved with the chart attirbutes of Fig. 3 is the precision of the position of the soldering portion that calculated of basis.,, for the temperature of the axial position of the chart attirbutes of calculating chart 3, taking the delivery temperature of the inlet side of turbine wheel as basis calculates by Heat Transfer Meter, do not comprise and leak the temperature rise that exhaust causes.
In addition, the invention provides a kind of manufacture method of turbine rotor of pressurized machine, it utilizes Ni solder that turbine wheel processed TiAl and carbon element steel are coupling and are closed, and it is characterized in that, comprising: the step of measuring the external diameter of turbine wheel; Set the distance from the back side of described turbine wheel to soldering portion, so that the external diameter by " from the back side of turbine wheel to the distance of soldering portion "/turbine wheel that " external diameter of turbine wheel " calculates is than the step entering in 7～10% scopes; In the position of setting by this step, utilize Ni solder by turbine wheel processed described TiAl and the carbon element steel step of closing that is coupling.
According to foregoing invention, measure the outer diameter D of turbine wheel, use this value to set the distance L from the back side of turbine wheel to soldering portion, so that enter in 7～10% scopes than H by the external diameter of " from the back side of turbine wheel to the distance L of soldering portion "/turbine wheel that " outer diameter D of turbine wheel " calculates, in this distance L, use Ni solder to carry out soldering.
Therefore, can be taking the position of its distance L as basis, be arranged on the position of having expanded to greatest extent bearing span, therefore can prevent shaft vibration, and, can prevent the maximization of pressurized machine, can prevent the strength decreased of the soldering part that delivery temperature causes simultaneously.
Invention effect
As above record, according to the present invention, utilizing Ni solder that turbine wheel processed TiAl and carbon element steel are coupling in the turbine rotor closing, set the distance from the back side of described turbine wheel to soldering portion, so that enter in 7～10% scopes by the external diameter ratio of " from the back side of turbine wheel to the distance of soldering portion "/turbine wheel that " external diameter of turbine wheel " calculates, thus, even in the case of flowing through the delivery temperature of turbine wheel reaches roughly 950～1000 DEG C, also can prevent the reduction of the bond strength of soldering portion, and, can maintain the miniaturization of pressurized machine.
Brief description of the drawings
Fig. 1 is the sectional drawing of the pressurized machine of embodiment of the present invention;
Fig. 2 is the amplification profile of turbine rotor;
Fig. 3 represents the ratio of external diameter of axial distance/turbine wheel and the performance plot of the relation of melting temperature ratio;
Fig. 4 is the performance plot that represents the soldering portion intensity after long-time high temperature keeps;
Fig. 5 is the explanatory drawing of the relation of the position of the length that represents rotor shaft, distance between bearings, soldering portion.
Fig. 6 is the explanatory drawing of diffusion phenomena mutual at TiAl turbine wheel processed, Ni solder flux and carbon element steel axle.
Embodiment
Utilize illustrated mode of execution to explain the present invention below.But the size of the constituent part of recording in this mode of execution, shape, its configuration etc. relatively, as long as no especially specifically recording, be not just the meaning that this scope of invention is defined in to this, is only illustrative examples.
Fig. 1 is the sectional drawing along the axle center K of pressurized machine 1.
First, the summary of the formation to pressurized machine 1 describes.The petrolic pressurized machine that this pressurized machine 1 is used for passenger car, wherein, axle center K direction dispose adjacently accommodate turbine wheel 5 turbine shroud 3, have the bearing 9 of swivel bearing rotor shaft (hereinafter referred to as axle) 7 bearing housing 10, accommodate the compressor housing 15 of the impeller 13 of compressor.
At the peripheral part of turbine shroud 3, helically is formed with scrollwork 17, is equipped with turbine wheel 5 at this spiral helicine core, and an end of turbine wheel 5 and axle 7 is engaged and is integrated in the part of joining portion B by solder, forms turbine rotor 19.
In addition, on bearing housing 10, be provided with the pairing left and right bearing 9,9 of supporting axle 7, axle 7 can be rotated around axle center K.And, in this bearing 9,9 respectively via lubricating oil path 21 supplying lubricating oils.
The outstanding flange 10a, the 3a that are formed on the end separately of this bearing housing 10 and above-mentioned turbine shroud 3 are docked setting, have the roughly elasticity baffle ring 23 of the ring-type of コ font in its periphery by the chimeric sectional shape that is combined with.In this connecting part, seize on both sides by the arms rear board 11 described later peripheral part evagination edge 11a and be fixed with rear board 11.
This rear board 11 is for roughly there being round-ended cylinder shape, the cylindrical part 11c of the general cylindrical shape shape that has bottom 11b and erect towards this direction of axle center K from the outer periphery of this bottom, the front end of cylindrical part is further bent into right angle and is provided with evagination edge 11a with the direction of axle center K.This evagination edge 11a is sandwiched between bearing housing 10 and turbine shroud 3 and is located and fix by quilt.
In addition, in the other end of axle 7, the impeller 13 of compressor is fixed by mounting nuts 25.In addition, on compressor housing 15, be formed with air inlet passage 27, spiral helicine air passageways 29, diffuser, form centrifugal compressor 31 by them.
By above-mentioned when forming the turbosupercharger 1 forming and moving, exhaust from motor (diagram is omitted) enters above-mentioned scrollwork 17, flow into the turbine wing root of turbine wheel 5 from the outer circumferential side of this scrollwork 17, flow along radial direction towards central side, in this turbine wheel 5, carry out expanding after acting, flowed out vertically and be directed to gas outlet 33 and send outside machine.
On the other hand, the rotation of turbine wheel 5 rotates the impeller 13 of centrifugal compressor 31 via axle 7, by the air inlet passage 27 of compressor housing 15, by this impeller 13 to sucked air pressurized after, be supplied to motor (diagram omit) by air passageways 29.
In addition, as shown in Figure 1, turbine wheel 5 and axle 7 are engaged at joining portion B, are provided with sealing flange or the metal seal ring be located on axle 7, so that exhaust can not flow to bearing 9 sides in bearing 9 sides of joining portion B.
And the major part that the scrollwork 17 in from motor to turbine shroud 3 flows through the exhaust G coming radially flows into from the inlet side of turbine wheel 5, but a part is leaked the back side that flows out to turbine wheel 5.Even if producing this leakage flows out, also can utilize the gap forming between the back side of turbine wheel 5 and the bottom 11b of rear board 11, to carry out throttling along axle center K direction mobile, again by the throttle orifice being formed by the gap of front end of cylinder flange 12 that is formed at the back side of turbine wheel 5 and the end of bearing housing 10, blocking is flowed to the B's of soldering portion of axle 7.
By this throttling action, the impact of the exhaust of Leakage prevention on joining portion B, thus, the strength decreased that the heat affecting of exhaust air flow that can Leakage prevention causes.
Below, with reference to Fig. 2, turbine rotor 19 is described.
Turbine rotor 19 is made up of above-mentioned turbine wheel 5 and rotor shaft (axle) 7, and turbine wheel 5 and axle 7 engage by soldering.In the end of turbine wheel 5, be formed with convex soldering portion 35 in rotating center section, in addition, on axle 7, be formed with concavity soldering portion 37, this convex soldering portion 35 and concavity soldering portion 37 become chimeric status, and the end face of the end face of turbine wheel 5 and axle 7 utilizes Ni solder 39 to engage.
The joint of turbine wheel 5 and axle 7 is for example carried out as follows,, by inserting Ni solder 39 and exert pressure in the axial direction between turbine wheel 5 and axle 7, this Ni solder 39 is pressurizeed, then cover and utilize for example high-frequency induction heating apparatus to heat with the gas of inert atmosphere gas.Be explained, as Ni solder 39, used the Ni such as BNi-1, the BNi-2 solder of JIS standard.
Turbine wheel 5 is made up of TiAl base alloy.TiAl base alloy is taking Ti as main Constitution Elements, and in addition the Al that contains 28～35 % by weight also can contain Nb, Cr, Mn, Si, W, C, B etc. and add the alloy of element.In the present embodiment, TiAl base alloy uses Ti, the Al of 7.0 % by weight, the Nb of 1.3 % by weight, the C of 0.03 % by weight that contain 31.3 % by weight, after precision casting and sintering, implement 1200 DEG C of above temperature for eliminating defect, the processing of certain hour HIP (Hot-Isostatic-Pressing, hot hydrostatic pressing are shaped).
In addition, axle 7 is made up of structural steel.Structural steel is taking Fe as main composition element, the Cr of the C that contains 0.30～0.45 % by weight, 0.85～1.25 % by weight, the Mn of 0.30～1.65 % by weight, the P below 0.030 % by weight, the S below 0.030 % by weight.In addition also can contain the N that Ni, Mo etc. add element and inevitable impurity level.So-called inevitably impurity, refers in structural steel, in raw material, exist, the element of inevitably sneaking in manufacturing process is the element containing micro-ly.In addition, so-called inevitably impurity level refers to the amount of the degree that inevitable impurity do not exert an influence to the characteristic of structural steel.
As structural steel, can use manganese steel, Mn-Cr steel, chromium steel, Cr-Mo steel, nickel chrome steel, nickel chromium molybdenum steel etc.
In the present embodiment, as structural steel, used that to contain C be that 0.33 % by weight, Cr are the Cr-Mo steel SCM435 of 0.90 % by weight.
By as above, on motor, carry the turbine rotor 19 that utilizes Ni solder 39 that the axle 7 of the turbine wheel of TiAl system 5 and carbon element steel is engaged, pressurized machine 1 is turned round, approach in delivery temperature under the state of 950 DEG C～1000 DEG C, using the back side of the turbine wheel shown in Fig. 25 as reference position (0), utilize Heat Transfer Meter to calculate apart from the surface temperature T of the axle 7 at the axial distance L place of this position, taking the outer diameter D of turbine wheel 5 and axial distance L as basis, the external diameter that calculates turbine wheel compares H=L/D again.
Then, taking the temperature T of the axle 7 at distance L place as basis, calculate the ratio of the melting point of this temperature T and Ni solder, taking this ratio as the longitudinal axis, taking the external diameter of above-mentioned turbine wheel than H=L/D as transverse axis, make the temperature distributing characteristic chart of the axial position of turbine rotor 19.Fig. 3 represents its temperature distributing characteristic chart.
Found out by Fig. 3, along with from reference position (position at the back side of turbine wheel 5) leave to negative side (Fig. 2 left side), temperature reduces.
On the other hand, Fig. 4 is the figure that represents the test for tensile strength result of the soldering portion of above-mentioned turbine rotor 19 after the long-time for example maintenance in 800 hours of high temperature.Soldering strength when the intensity of room temperature state (approximately 20 DEG C) is made as to benchmark 100 is than as the longitudinal axis, and transverse axis represents the temperature ratio with respect to the fusing point of Ni solder.
Find the temperature ratio (being called melting temperature ratio) from 60% to 65% with respect to the fusing point of solder, bond strength occurs sharply to reduce, the tendency of strength decreased along with temperature rise afterwards.That is, be exposed to for a long time melting temperature than being more than 60% temperature if find, the bond strength of soldering portion significantly reduces.
; if by being exposed to for a long time above-mentioned melting temperature when being more than 60% temperature; bond strength reduces this discovery significantly; be applied in the temperature distributing characteristic chart of turbine rotor 19 of Fig. 3; do not increase rotor axial length or change position of bearings; maintain the miniaturization of pressurized machine 1; prevent strength decreased; just need to be set as approximately 60% temperature taking the fusing point of the significant solder of strength decreased as boundary; narrow range before exceeding this boundary, is set as 50%～60% temperature range of the fusing point of Ni solder.
Consider these aspects if find and set the position of soldering portion, use the relation property of Fig. 3, the external diameter of the turbine wheel corresponding with 50%～60% temperature range of the fusing point of Ni solder is applicable to than the scope for H=L/D7～10%.And, as be about to exceed Ni solder fusing point 60% before the external diameter ratio of turbine wheel corresponding to 55%～60% temperature range, be the most applicablely set as roughly 8%.
In addition, in the present embodiment, not the position taking the distance at the back side apart from turbine wheel 5 as setting parameter soldering portion only, also to adopt the external diameter that calculates turbine wheel with the ratio of the outer diameter D of turbine wheel 5 to set than H.
If the external diameter of turbine wheel is large, the leakage air displacement that correspondingly arrives soldering portion also reduces, and becomes the more danger of high temperature so reduced soldering portion in this part.Therefore, the external diameter of turbine wheel affects the amount of leaking exhaust arrival soldering portion greatly.
In addition, the temperature of the inlet side of turbine wheel because of delivery temperature be fixed temperature roughly, the heat affecting causing to the transmission thermal conductance of center axis is also as long as the external diameter of turbine wheel is large, the transmission heat that correspondingly arrives soldering portion also reduces, so the external diameter of turbine wheel is being important key element aspect the bond strength of evaluation soldering portion.
Therefore, not only calculate the distance from the back side of turbine wheel to soldering portion, also to calculate with the ratio of the external diameter of turbine wheel be the external diameter of turbine wheel than H, set engagement positio by this ratio, therefore, in setup parameter, can reflect the size of the external diameter of turbine wheel.Therefore, can set correctly and have the position of the soldering portion of reliability.
Then, the joint method that utilizes Ni solder 39 to engage the turbine wheel 5 of TiAl system and the axle 7 of carbon element steel is described.
To the manufacture method of turbine rotor 19, especially the establishing method of soldering portion position describes.
First, measure the outer diameter D of turbine wheel 5, secondly, calculate the distance L from the back side of turbine wheel 5 to soldering portion, so that enter in 7～10% scopes than H by the external diameter of " from the back side of turbine wheel to the distance L of soldering portion "/turbine wheel that " outer diameter D of turbine wheel " calculates.And, at the brazing operation of the turbine wheel of the position of the distance L calculating enforcement TiAl system and the axle of carbon element steel.
Measure the outer diameter D of turbine wheel, use this value to calculate the distance L from the back side of turbine wheel to soldering portion, so that enter in 7～10% scopes than H by the external diameter of " from the back side of turbine wheel to the distance L of soldering portion "/turbine wheel that " outer diameter D of turbine wheel " calculates, because being used Ni solder, the position of the distance L in its value of calculating carries out soldering, therefore be basis taking the position of this distance L, bearing span is set in to the position of expansion to greatest extent, can prevent shaft vibration, and, soldering position is made as apart from more than turbine wheel necessity, rotor axial length is increased, can prevent that pressurized machine 1 from maximizing.
In the case of the engagement positio that resets solder, or for the turbine rotor 19 that utilizes solder to be bonded together, change in the situation of position of soldering portion in order to prevent the strength decreased of soldering part, as long as be set in calculated position so that the external diameter of turbine wheel enters 7～10% scopes than H, therefore, can prevent: change bearing span, or the length of extension shaft 7, and set, to make engagement positio be necessary above distance apart from the back side of turbine wheel 5.
; it is apart from situation more than back side necessity of turbine wheel 5, in order the size of pressurized machine 1 to be maintained to the small-sized bearing span S' that makes than the shorter situation of existing bearing span S shown in Fig. 5 (A) by the set positions of soldering portion that Fig. 5 (B) represents; so; do not change the length of the axle 7 of turbine rotor 19; but bearing span shortens, therefore the danger of the shaft vibration of axle 7 increases.
In addition, Fig. 5 (C) represents that by the set positions of soldering portion be apart from situation more than back side necessity of turbine wheel 5, in order to prevent that the bearing span S that the danger of shaft vibration of axle 7 needs is set as the situation identical with existing bearing span, so, the total length of the axle 7 of turbine rotor 19 is elongated, and the size of pressurized machine 1 maximizes.
Industrial utilizability
According to the present invention, utilizing Ni solder that turbine wheel processed TiAl and carbon element steel are coupling in the turbine rotor closing, making soldering position is the position away from the proper range at the back side of turbine wheel, can prevent the strength decreased of the soldering part that delivery temperature causes, and, can keep the miniaturization of turbosupercharger, therefore, be applicable to being applied to the turbosupercharger such as the motor using in the motor of vehicle, boats and ships or aircraft or generator.
Claims (according to the amendment of the 19th article of treaty)
1. a turbine rotor for pressurized machine, it utilizes Ni solder that turbine wheel processed TiAl and carbon element steel are coupling and are closed, it is characterized in that,
Set the distance from the back side of described turbine wheel to soldering portion, so that enter in 7～10% scopes by the external diameter ratio of " from the back side of turbine wheel to the distance of soldering portion "/turbine wheel that " external diameter of turbine wheel " calculates, the maximum temperature of this soldering portion position becomes and is exceeding with respect near temperature before the fusing point 60% of described Ni solder.
2. the turbine rotor of pressurized machine as claimed in claim 1, is characterized in that,
In the back side of described turbine wheel, and between this back side, there is gap and be equipped with rear board along this back side, flowing to the joining portion of described Ni solder with the exhaust that prevents from going out to back side side leakage from the inlet side of described turbine wheel.
3. the turbine rotor of pressurized machine as claimed in claim 1, is characterized in that,
The external diameter of described turbine wheel is than being located at roughly 8% position.
4. a manufacture method for the turbine rotor of pressurized machine, it utilizes Ni solder that turbine wheel processed TiAl and carbon element steel are coupling and are closed, and it is characterized in that, comprising:
Measure the step of the external diameter of turbine wheel;
Set the distance from the back side of described turbine wheel to soldering portion so that by turbine wheel external diameter that " from the back side of turbine wheel to the distance of soldering portion "/" external diameter of turbine wheel " calculates than the step entering in 7～10% scopes;
In the position of being set by this step, utilize Ni solder by turbine wheel processed described TiAl and the carbon element steel step of closing that is coupling.
Claims (4)
1. a turbine rotor for pressurized machine, it utilizes Ni solder that turbine wheel processed TiAl and carbon element steel are coupling and are closed, it is characterized in that,
Set the distance from the back side of described turbine wheel to soldering portion, so that enter in 7～10% scopes by the external diameter ratio of " from the back side of turbine wheel to the distance of soldering portion "/turbine wheel that " external diameter of turbine wheel " calculates.
2. the turbine rotor of pressurized machine as claimed in claim 1, is characterized in that,
In the back side of described turbine wheel, and between this back side, there is gap and be equipped with rear board along this back side, flowing to the joining portion of described Ni solder with the exhaust that prevents from going out to back side side leakage from the inlet side of described turbine wheel.
3. the turbine rotor of pressurized machine as claimed in claim 1, is characterized in that,
The external diameter of described turbine wheel is than being located at roughly 8% position.
4. a manufacture method for the turbine rotor of pressurized machine, it utilizes Ni solder that turbine wheel processed TiAl and carbon element steel are coupling and are closed, and it is characterized in that, comprising:
Measure the step of the external diameter of turbine wheel;
Set the distance from the back side of described turbine wheel to soldering portion so that by turbine wheel external diameter that " from the back side of turbine wheel to the distance of soldering portion "/" external diameter of turbine wheel " calculates than the step entering in 7～10% scopes;
In the position of being set by this step, utilize Ni solder by turbine wheel processed described TiAl and the carbon element steel step of closing that is coupling.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012044142A JP6021354B2 (en) | 2012-02-29 | 2012-02-29 | Engine turbocharger |
| JP2012-044142 | 2012-02-29 | ||
| PCT/JP2013/054990 WO2013129410A1 (en) | 2012-02-29 | 2013-02-26 | Turbocharger turbine rotor and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104136738A true CN104136738A (en) | 2014-11-05 |
| CN104136738B CN104136738B (en) | 2017-02-22 |
Family
ID=49082607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380011158.2A Active CN104136738B (en) | 2012-02-29 | 2013-02-26 | Turbocharger,turbocharger turbine rotor and manufacturing method thereof |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9556738B2 (en) |
| EP (1) | EP2821618B1 (en) |
| JP (1) | JP6021354B2 (en) |
| CN (1) | CN104136738B (en) |
| WO (1) | WO2013129410A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5916377B2 (en) * | 2011-12-27 | 2016-05-11 | 三菱重工業株式会社 | Turbocharger turbine and supercharger assembly method |
| DE102017207173B4 (en) | 2017-04-28 | 2022-12-22 | Vitesco Technologies GmbH | Turbocharger with predetermined breaking point for an internal combustion engine |
| CN107983950B (en) * | 2017-12-04 | 2019-10-29 | 宁国市华成金研科技有限公司 | A kind of injection molding method of high intensity booster turbine impeller |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6331226U (en) * | 1986-08-13 | 1988-02-29 | ||
| US20060239841A1 (en) * | 2005-04-21 | 2006-10-26 | Panek Edward R | Turbine heat shield with ribs |
| JP2007229792A (en) * | 2006-03-03 | 2007-09-13 | Seimitsu Kogyo Kk | Joining method of turbine wheel with rotor shaft |
| CN101517199A (en) * | 2006-10-13 | 2009-08-26 | 博格华纳公司 | Turbocharger |
| JP2009203807A (en) * | 2008-02-26 | 2009-09-10 | Mitsubishi Heavy Ind Ltd | Turbine rotor and method for manufacturing rotor |
| CN102046960A (en) * | 2008-06-19 | 2011-05-04 | 博格华纳公司 | Rotor shaft of a turbomachine and method for the production of a rotor of a turbomachine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10118764A (en) | 1996-10-18 | 1998-05-12 | Daido Steel Co Ltd | Method for joining tial turbine impeller with rotor shaft |
| EP0837221B1 (en) * | 1996-10-18 | 2003-09-10 | Daido Steel Company Limited | Ti-Al turbine rotor and method of manufacturing said rotor |
| JPH10193087A (en) | 1996-12-27 | 1998-07-28 | Daido Steel Co Ltd | Manufacture of titanium-aluminum-made turbine rotor |
| WO1998045081A1 (en) * | 1997-04-04 | 1998-10-15 | Nguyen Dinh Xuan | Friction welding interlayer and method for joining gamma titanium aluminide to steel, and turbocharger components thereof |
| JP3453302B2 (en) | 1998-05-07 | 2003-10-06 | 三菱重工業株式会社 | Method of joining TiAl alloy member to structural steel and joining parts |
| JP3534633B2 (en) | 1999-01-05 | 2004-06-07 | 三菱重工業株式会社 | Joint member and turbine member |
| JP2004090130A (en) | 2002-08-30 | 2004-03-25 | Mitsubishi Heavy Ind Ltd | JOINING METHOD FOR TiAL-BASE ALLOY AND STEEL PRODUCT |
| US7287960B2 (en) * | 2004-07-28 | 2007-10-30 | B{dot over (o)}rgWarner, Inc. | Titanium aluminide wheel and steel shaft connection thereto |
| US20070199977A1 (en) * | 2006-02-28 | 2007-08-30 | Michael Pollard | Turbocharger turbine and shaft assembly |
| JP2008202544A (en) * | 2007-02-21 | 2008-09-04 | Mitsubishi Heavy Ind Ltd | Manufacturing method of rotor, and exhaust turbocharger having the rotor |
-
2012
- 2012-02-29 JP JP2012044142A patent/JP6021354B2/en active Active
-
2013
- 2013-02-26 CN CN201380011158.2A patent/CN104136738B/en active Active
- 2013-02-26 EP EP13755039.8A patent/EP2821618B1/en active Active
- 2013-02-26 WO PCT/JP2013/054990 patent/WO2013129410A1/en active Application Filing
- 2013-02-26 US US14/380,952 patent/US9556738B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6331226U (en) * | 1986-08-13 | 1988-02-29 | ||
| US20060239841A1 (en) * | 2005-04-21 | 2006-10-26 | Panek Edward R | Turbine heat shield with ribs |
| JP2007229792A (en) * | 2006-03-03 | 2007-09-13 | Seimitsu Kogyo Kk | Joining method of turbine wheel with rotor shaft |
| CN101517199A (en) * | 2006-10-13 | 2009-08-26 | 博格华纳公司 | Turbocharger |
| JP2009203807A (en) * | 2008-02-26 | 2009-09-10 | Mitsubishi Heavy Ind Ltd | Turbine rotor and method for manufacturing rotor |
| CN102046960A (en) * | 2008-06-19 | 2011-05-04 | 博格华纳公司 | Rotor shaft of a turbomachine and method for the production of a rotor of a turbomachine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104136738B (en) | 2017-02-22 |
| US9556738B2 (en) | 2017-01-31 |
| JP6021354B2 (en) | 2016-11-09 |
| WO2013129410A1 (en) | 2013-09-06 |
| EP2821618A1 (en) | 2015-01-07 |
| US20150037159A1 (en) | 2015-02-05 |
| EP2821618B1 (en) | 2019-04-10 |
| JP2013181415A (en) | 2013-09-12 |
| EP2821618A4 (en) | 2015-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10683952B2 (en) | Fluid couplings and methods for additive manufacturing thereof | |
| JP5338991B1 (en) | Turbine housing and exhaust turbine supercharger | |
| EP3026225B1 (en) | Variable geometry exhaust turbocharger and method of manufacturing | |
| JP5384692B2 (en) | Exhaust turbocharger | |
| US8967955B2 (en) | Turbocharger with variable nozzle having labyrinth seal for vanes | |
| US20150037146A1 (en) | Turbocharger | |
| EP2508731A1 (en) | Sheet metal turbine housing | |
| JP6542246B2 (en) | Variable displacement turbocharger | |
| US20140290255A1 (en) | Hollow curved plate, manufacturing method of the same and combustor of gas turbine | |
| JP2006037952A (en) | Titanium aluminide impeller and connection of steel shaft to the impeller | |
| US8951007B2 (en) | Turbine housing for an exhaust gas turbocharger and method for producing turbine housing | |
| CN104136738A (en) | Turbocharger turbine rotor and manufacturing method thereof | |
| CN104696017A (en) | Welded shaft and turbine wheel assembly | |
| JP2011511901A (en) | Turbine housing and method for manufacturing turbine housing | |
| JP2018193992A (en) | Turbocharger | |
| JP2014047714A (en) | Turbocharger | |
| US20120294712A1 (en) | Turbocharger and wheel housing | |
| EP3115670B1 (en) | Turbine engine couplings and methods for manufacturing turbine engine couplings | |
| US11319879B2 (en) | Manufacturing method of turbine casing | |
| EP2612987A2 (en) | A multi-material rotor for a steam turbine and a method for producing a multi-material rotor | |
| CN110325708A (en) | Guide vane for fluid machinery | |
| GB2519394A (en) | Cast CrMoV steel alloys and the method of formation and use in turbines thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190201 Address after: Kanagawa Patentee after: MITSUBISHI heavy industries, engines and supercharger Corporation Address before: Tokyo, Japan, Japan Patentee before: Mit-subishi Heavy Industries Ltd. |
|
| TR01 | Transfer of patent right |